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<html lang="cn">
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    <meta charset="UTF-8">
    <title>函数</title>
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        table {
            border-collapse: collapse;
        }

        td {
            border: black 1px solid;
            background-color: red;
        }
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    <script src="04.js" type="text/javascript" charset="UTF-8"></script>
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</body>
</html>